Elastic Ag-anchored N-doped graphene/carbon foam for the selective electrochemical reduction of carbon dioxide to ethanol

Lv, Kuilin; Fan, Yanchen; Yuan, Yi; Wang, JinRong; Zhu, Ying; Zhang, Qianfan

doi:10.1039/c7ta10802h

Cited by 114 publications

(69 citation statements)

References 28 publications

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“…Synthesis of NiSA‐NGA and NGA : GO was prepared from natural flake graphite powder following a modified Hummer's method . NiSA‐NGA catalysts were synthesized using impregnation‐pyrolysis method . In a typical process, a certain amount of 3 mg mL −1 NiCl 2 ·6H 2 O and 15 µL of 30% H 2 O 2 were added to 10 mL of 2 mg mL −1 GO suspension under gentle agitation for 1 h. After that, a patch of MF was immersed in the above mixed suspension, and then dried in an oven.…”

Section: Methodsmentioning

confidence: 99%

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Mou

Chen

Zhang

et al. 2019

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process, desired products can be easily adjusted by changing the type of electrocatalysts and the applied potentials. [3] Unfortunately, there are still many challenges for CO 2 electroreduction due to the highly stable chemical bound of CO 2 molecule and high energy barrier of proton-coupled multielectron transfer process. [4] Thus, it is critical to develop efficient and stable catalyst materials for CO 2 electroreduction.At present, many catalysts have been reported, including metal, metal oxide, MXenes (transition-metal carbides, nitrides, and carbonitrides), carbon-based materials (e.g., graphene, carbon nanotube (CNT), and carbon quantum dots (CQD)). [5] The ideal heterogeneous catalyst of CO 2 electroreduction should contain highly dispersed active species and sufficient accessible surface to prevent the problem of the mass transfer. [6] Recently, single atom catalysts (SACs) have drawn much attention for CO 2 RR, with advantages of unique electronic structure, unsaturated coordination configuration of active centers, maximum atom-utilization efficiency, quantum size effect, strong interactions between metal and support as well as foreign atom effect. [7] SACs materials afford high selectivity and stability toward desired products, exhibiting great potential to bridge the gap between the homogeneous and heterogeneous catalysis.To date, researchers have successfully developed efficient M-N-C-based (M = Ni, Fe, Co, Mn, Zn, Sn) electrocatalysts with Construction of single atom catalysts (SACs) with high activity toward electroreduction of CO 2 still remains a great challenge. A very simple and truly cost-effective synthetic strategy is proposed to prepare SACs via a impregnation-pyrolysis method, through one-step pyrolysis of graphene oxide aerogel. Compared with other traditional methods, this process is fast and free of repeated acid etching, and thus it has great potential for facile operation and large-scale manufacturing. Both X-ray absorption fine structure and high-angle annular dark-field scanning transmission electron microscopy images confirm the presence of isolated nickel atoms, with a high Ni loading of ≈2.6 wt%. The obtained 3D porous Ni-and N-codoped graphene aerogel exhibits excellent activity toward electroreduction of CO 2 to CO, in particular exhibiting a remarkable CO Faradaic efficiency of 90.2%. Density functional theory calculations reveal that free energies for the formation of intermediate *COOH on coordinatively unsaturated NiN sites are significantly lower than that on NiN 4 site, suggesting the outstanding activities of CO 2 electroreduction originate from coordinatively unsaturated NiN sites in catalysts.

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Section: Methodsmentioning

confidence: 99%

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Mou

Chen

Zhang

et al. 2019

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“…Porous Pd films produced acetate of 5 % FE though with 50 % formate and 15 % methanol . Ag‐anchored N‐doped graphene/carbon foam catalyzed ethanol production with 82 % FE . According to these works, limiting intermediates diffusion seems an effective strategy for noble metal based catalysts producing C2+ products.…”

Section: Recent Progress Towards Practical Electrochemical Co2 Splittingmentioning

confidence: 99%

Electrochemical Carbon Dioxide Splitting

Xie

Huang

et al. 2019

ChemElectroChem

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To realize renewable energy storage with a reduced carbon footprint for replacing fossil fuel and closing the unbalanced carbon cycle, electrochemical CO 2 splitting, commonly containing aqueous CO 2 reduction and water oxidation as core reactions, has received booming interest for its unique ability to produce chemicals and fuels from CO 2 powered by renewable electricity. In this Review, recent progress of electrochemical CO 2 splitting from a fundamental understanding to practical control of the main performance index, including production rate, product selectivity, and energetic efficiency, is discussed with the highlight of the methodologies used to increase CO 2 supply in water media and active site design. The roles of the main components in electrochemical CO 2 splitting devices, such as catalyst, electrode, electrolyzer, membrane, and electrolyte, are discussed. Finally, we also provide personal perspectives to highlight the opportunities to overcome low stability and limited selectivity for practical electrochemical CO 2 splitting.[a] Dr.

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“…Recently, Kanan group reported oxide‐derived nanocrystalline Cu can efficiently convert CO 2 into a variety of oxygenates, which is considered to be facilitated by high density of grain boundaries on the catalyst surface . Interestingly, several recent reports have shown that C2 molecules could be generated with high selectivity by using heteroatom doped carbon‐based composites other than Cu‐based materials . In South Korea, as described in Scheme , electrochemical CO 2 reduction to multi‐carbon products using Cu‐based materials and others have not been paid much attention until very recently.…”

Section: Research Trends In Electrochemical Reduction Of Co2 At the Ementioning

confidence: 99%

Looking Back and Looking Ahead in Electrochemical Reduction of CO₂

Lee

Choi

Lee

2019

The Chemical Record

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Electrochemical reduction of carbon dioxide (CO2) to valuable organic compounds is promising as to recycling of carbon source of CO2 and technical compatibility with systems using renewable energy resources. In recent years, considerable efforts have been devoted to the research field of CO2 conversion using electrocatalysis. This personal account particularly focuses on the recent progress that has been achieved by the Ertl Center and a number of groups in South Korea that becomes one of the larger CO2 emitters. The research trends of catalyst development divided into different categories according to the primary products are presented first. Afterwards, several studies on theoretical calculations and electrolytic reactors are reviewed taking into account the fundamental understanding and feasibility of the CO2 electroreduction. Finally, a perspective on the challenges and needs in achieving the advanced level of research and development is presented.

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Elastic Ag-anchored N-doped graphene/carbon foam for the selective electrochemical reduction of carbon dioxide to ethanol

Abstract: 3D macroporous hierarchical Ag-G-NCF can efficiently convert CO2 to ethanol with a low overpotential, high faradaic efficiency and high selectivity.

Cited by 114 publications

References 28 publications

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Electrochemical Carbon Dioxide Splitting

Looking Back and Looking Ahead in Electrochemical Reduction of CO₂

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Elastic Ag-anchored N-doped graphene/carbon foam for the selective electrochemical reduction of carbon dioxide to ethanol

Abstract: 3D macroporous hierarchical Ag-G-NCF can efficiently convert CO2 to ethanol with a low overpotential, high faradaic efficiency and high selectivity.

Cited by 114 publications

References 28 publications

Highly Efficient Electroreduction of CO2 on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Highly Efficient Electroreduction of CO2 on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Electrochemical Carbon Dioxide Splitting

Looking Back and Looking Ahead in Electrochemical Reduction of CO2

Contact Info

Product

Resources

About

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Highly Efficient Electroreduction of CO₂ on Nickel Single‐Atom Catalysts: Atom Trapping and Nitrogen Anchoring

Looking Back and Looking Ahead in Electrochemical Reduction of CO₂